藍(lán)寶石的礦物名稱也叫剛玉，它是六方晶體，硬度9，比重3.97至4.08，折光率1.76至1.77,透明、半透明或不透明。它是氧化鋁鈦的結(jié)晶體，因含鐵離子與鈦離子而呈藍(lán)色，按其顏色深淺濃艷的程度不同分為很多種，其中以洋藍(lán)色為最好。最大的藍(lán)寶石原石產(chǎn)于斯里蘭卡。

Sri Lankan jewels are making their presence felt on the global markets. Prepare yourself for the world’s largest blue sapphire the country has to offer, a 17-kilogram very blueish stone that’s been cut from a 42-kilo blue sapphire corundum.

Experts say the formation took more than 200,000 years to develop. Sapphires have traditionally been worn by kings and queens. And many of the royal stones are from Sri Lanka.

But years of bloody civil war overshadowed the country’s business. Sri Lankans now hope with the astonishing giant blue stone, the jewelry industry can reach new heights.

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